diff --git a/src/core/server/http/router/socket.test.ts b/src/core/server/http/router/socket.test.ts
index 60c91786767a6..389c08825d51b 100644
--- a/src/core/server/http/router/socket.test.ts
+++ b/src/core/server/http/router/socket.test.ts
@@ -92,7 +92,7 @@ describe('KibanaSocket', () => {
       });
       const socket = new KibanaSocket(tlsSocket);
 
-      expect(socket.renegotiate({})).resolves.toBe(result);
+      await expect(socket.renegotiate({})).rejects.toBe(result);
       expect(spy).toBeCalledTimes(1);
     });